HDMI

ECPIX-5 has a female HDMI A connector powered by an IT6613E HDMI 1.4 transmitter. It is capable of handling resolutions up to 1080p@30fps/1080i@60fps and can support up to eight audio channels. It also offers HDCP encoding with either integrated or user provided keys.

Note

Because of the lack of Bank 4 on the 45F variant, this version of ECPIX-5 can only do 8-bits color depth.

IT6613E documentation

There are two documents publicly available for the HDMI transmitter used in ECPIX-5:

• IT6613 datasheet: hardware datasheet

• CAT6613 Programming Guide: I2C register documentation for the CAT6613 (equivalent to IT6613E)

An IT6613E Programming Guide seems to exist but as far as we know it isn’t publicly available.

In addition to those datasheets, you can find IT6613E related code on GitHub for reference purposes.

Pinout

HDMI transmitter (video)

IT6613E pin	FPGA pin	Description
HSYNC	B4	Horizontal sync
VSYNC	A4	Vertical sync
DE	A3	Data enable
PCLK	C1	Pixel clock
R[0]	AD26	Red video input
R[1]	AE25
R[2]	AF25
R[3]	AE26
R[4]	E10
R[5]	D11
R[6]	D10
R[7]	C10
R[8]	D9
R[9]	E8
R[10]	H5
R[11]	J4
G[0]	AA23	Green video input
G[1]	AA22
G[2]	AA24
G[3]	AA25
G[4]	E1
G[5]	F2
G[6]	F1
G[7]	D17
G[8]	D16
G[9]	E16
G[10]	J6
G[11]	H6
B[0]	AD25	Blue video input
B[1]	AC26
B[2]	AB24
B[3]	AB25
B[4]	B3
B[5]	C3
B[6]	D3
B[7]	B1
B[8]	C2
B[9]	D2
B[10]	D1
B[11]	E3

HDMI transmitter (audio)

IT6613E pin	FPGA pin	Description
MCLK	E19	Audio master clock
SCK	D6	Bit clock
WS	C6	Word clock
I2S0	A6	I2S data #0
I2S1	B6	I2S data #1
I2S2	A5	I2S data #2
I2S3	C5	I2S data #3

HDMI transmitter (control)

IT6613E pin	FPGA pin	Description
INT#	C4	Interrupt output (active low)
SYSRSTN	N6	Hardware reset (active low)
PCSDA	E17	I2C data (address: 0x98)
PCSCL	C17	I2C clock